Your talking about a vb
As stated there is no vbgallery import to vbgallery import.
You can try uninstalling vbgallery move over the vbgallery tables to the new server database and copy the files directory from that old install over to the new install you will probally need to delete the files directory that is on the new server.
But then you can run the install and do an upgrade option and then after the upgrade is done you can go into vbgallery admin and fix the urls and server paths as they would all be from your other old install
The point I am making is the only way to keep content is to upgrade.